export function MP(ak) {
    return new Promise(function (resolve, reject) {
         window.init = function () {
        resolve(BMap)
   }
  var script = document.createElement("script");
  script.type = "text/javascript";
  script.src = "http://api.map.baidu.com/api?v=2.0&ak="+"Vj2P3KUgAPeGoWjkwGz6qEPerVxzasX8"+"&callback=init";
  script.onerror = reject;
  document.head.appendChild(script);
})
}